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Polypropylene (PP) filter bag

Polypropylene (PP) filter bag

DWD group is a manufacturer of high precision micron-sized liquid filter bag production technology in China. We choose high quality imported and domestic filter raw materials, adopt advanced processing technology, strict quality control, can provide the customer with the technical solution of the tailoring style. Lead the development of the high - precision anti-leakage steel coil full - welded filter bag. Our liquid filtration material contains no silicon-oil substances, which are used in strict conditions such as food or coatings.

Standard filter bag size:
1 bag - Φ 180 x 430 mm (Φ 7 x 17 inches)
2 bags - Φ 180 x 820 mm (Φ 7 x 32 inches)
3 bags - Φ 106 x 230 mm (Φ 4 x 9 inches)
4 bags - Φ 106 x 380 mm (Φ 4 x 15 inches)
5 bags - Φ 152 x 510 mm (Φ 6 x 20 inches)

Bag texture:(PO) polypropylene needle felt: 1-3-5-10-25-100 micron
Other optional materials
(PE) polyester needle felt: 1-5-10-25-50-75-100-200 micron
(NO) nylon monofilament, filament: 100-800 microns
Filter bag fixed mouth ring material: stainless steel coil (SUS304), galvanized steel ring, polyester/polypropylene plastic ring (PE/PP) and string rope.

Textile, printing and dyeing, various liquid purification in the paper industry.
2. Food and beverage: beer, liquor, bottled water, tea beverage, dairy products, cooking oil and other food additives manufacturing process purification and sterile treatment.
Petrochemical and chemical: lubricating oil, jet coal and various kinds of oil products, catalysts, adhesives, polymers, resins, hydrogen peroxide water, chemical fiber manufacturing process
4 fluid purification, valuable chemical intermediate products and chemical products separation and recycling.
Paint, paint ink: latex paint, paint raw materials and solvent filtration, printing ink, printing ink and additive filtration.

Polypropylene PP liquid filter bag parameter table

Product name

Polypropylene filter bag


Polypropylene fiber

Weight (g/m2)


Thickness (mm)


Ventilation rate(m3/m2/min)


Fracture strength(N/5*20cm)





Elongation at break (%)





Working temperature(℃)


Instantaneous working temperature (℃)


Operating pressure difference (kg/cm2)


Acid resistance


Alkali resistance


Wear resistance


Hydrolytic stability



Heat setting, water and oil repellent

Remark: We always provided the products customization service.

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